Under what circumstances uv ink will not dry?

author: Uvink

2022-12-21

Under what circumstances uv ink will not dry?Inks over shelf life or excess additives

Generally, if the shelf life of the ink is exceeded, the ink may be poor drying after

printing due to the failure of the photoinitiator in the ink. In addition, in the printing

production, in order to improve the performance of ink, it is often necessary to add

additives such as adjusting ink oil and removing adhesive in ink. If the proportion of

additives is too high, it may lead to too thin ink and cause poor drying.

Under what circumstances uv ink will not dry?Different colors of uv ink drying degree

of different tests show that different colors of uv ink on the absorption of the spectrum

is different, so in the same power of u lamp, different colors of uv ink drying degree.

Such as white uv ink can directly reflect the light, black uv ink will form diffuse reflection

of light, magenta uv ink on light absorption effect is better. According to experience,

four primary color uv ink drying difficulty from difficult to easy is black, cyan, yellow

and magenta, and gold and silver uv ink than four primary color uv ink more difficult to

dry, white uv ink due to the reflection of light is also difficult to dry. According to

the drying characteristics of different colors of uv ink, reasonable arrangement of printing

color sequence, printing ink is difficult to dry, and then printing ink is easy to dry,

which can solve the problem of poor ink drying to a certain extent.

Under what circumstances uv ink will not dry?Other reasons for lithography with

bright resin ink, under normal circumstances, the imprint transferred to paper by rubber

cloth can be dried in a few hours. But in daily production, imprinting is often too slow

to dry, so the following reasons need to be investigated: 1. The water supply is too large?

2, embellish version of the liquid pH value is too small? 3. Is the temperature in the

printing workshop too low or the humidity too high? 4, paper absorption is poor?

Solution to the above problems, we should strictly control the size of the layout water,

master the pH value of the solution. Encounter imprinting is not dry, should be timely

to air printing, ventilation, so that air into the paper, to speed up the time of conjunctiva.